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        <AuthEnty affiliation="Technische Universität Berlin" xml:lang="en">T. Velden
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      <abstract xml:lang="en">&lt;p&gt;This data set was generated to compare topic extraction solutions against each other without the availability of an authoritative  ground truth. The topics were extracted from a corpus of bibliographic data from the Web of Science of publications in 59 journals in Astrophysics and Astronomy published between 2003-2011. The comparative analysis was undertaken to obtain insights into how topic extraction approaches construct topics differently and how the resulting topical structures differ.&lt;/p&gt;</abstract>
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